remove implication duo_focus (27578) -> group (457814)
create implication trio_focus (1254) -> group (457814) # duplicate of implication #28681
remove implication threesome (58701) -> group_sex (104577)
remove implication sandwich_position (3810) -> group_sex (104577)
remove implication train_position (2649) -> group_sex (104577)
remove implication triangle_position (800) -> group_sex (104577)
remove implication spitroast (15945) -> group_sex (104577)
remove implication reverse_spitroast (411) -> group_sex (104577)
remove implication collaborative_footjob (251) -> group_sex (104577)